COLORADO VOTING INFORMATION
Colorado voting deadlines for 2026
The 2026 general election is Tuesday, November 3, 2026. Registration rules differ by state. Use the verified information and official election links below to prepare to vote.
Voter registration deadline
This is the deadline to register or update registration to receive a ballot by mail. You may still register later, but must visit a voter service and polling center to receive a ballot.
- Official source:
- Colorado Secretary of State
- Last verified:
- September 16, 2026
General registration rule
Register ahead of the mail-ballot cutoff to receive a ballot by mail. Later registration requires visiting a voter service and polling center.
This is a general rule summary, not a substitute for the election-specific deadline shown by your election authority.
Official Colorado voter services
If one of these links will not open, use the Colorado election website above instead. We never substitute an unofficial source for an official election service.
Election dates, registration procedures and voting locations can change. For an important voting decision, confirm the information with the linked state or local election authority.
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